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A fast iterative algorithm for frequency estimation is developed in this paper to improve the frequency tracking performance. If the signal is transformed by a mathematical tool, the signal to noise ratio (SNR) should not be greatly reduced after the transformation. The analysis presented in this paper showed that the traditional method for frequency estimation causes large noise at high frequency...
Digital waveguide models are commonly used for simulating vocal-tract acoustics based on physiological data. The data are usually obtained from magnetic resonance imaging. The paper details an approach for extracting the model parameters from vowel sounds. The parameters are used in estimating the formant compared with LPC. The tests are carried on Chinese vowels, and the proposed algorithm is proved...
A method, which is on the basis of auditory perception wavelet transform, is proposed to model the speech process and extract features for cochlear implants. First, the original speech signal is decomposed by using an auditory perception wavelet transform. Second, a linear predictive coding method is used to extract the fundamental frequency and formant frequency in the perception channel. Experimental...
The objective of this paper is to clarify the role of formant frequency in the perception of pitch in whispered Mandarin. A method of instantaneous frequency estimation is applied to the tracking of whispered speech formant frequencies. The formant frequencies data of whispered Mandarin reveal the relationship between the formant frequencies of whispered Mandarin vowels and gender and tone. Furthermore,...
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